Extech SDL350 Hot Wire CFM Thermo-Anemometer/Datalogger


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Category: Air Flow Meters

Quick Overview:

Records data on an SD card in Excel® format

The SDL350 records data on an SD card in Excel format. Air Velocity/Air Flow meter with telescoping probe designed to fit into HVAC ducts and other small openings. Telescoping probe extends up to 7.05ft (215cm) maximum length with cable. Adjustable data sampling rate. Stores 99 readings manually and 20M readings via 2G SD card. Type K/J Thermocouple input for high temperature measurements. Large (9999 count) LCD displays Air Velocity or Air Flow and Temperature simultaneously. Record/Recall MIN, MAX, Data Hold and Auto power off. Complete with 6 x AA batteries, SD card, telescoping probe with cable, and hard carrying case.

  • Air Velocity/Air Flow meter with telescoping probe designed to fit into HVAC ducts and other small openings
  • Telescoping probe extends up to 7.05ft (215cm) maximum length with cable
  • Adjustable data sampling rate
  • Stores 99 readings manually and 20M readings via 2G SD card
  • Type K/J Thermocouple input for high temperature measurements
  • Large (9999 count) LCD displays Air Velocity or Air Flow and Temperature simultaneously
  • Record/Recall MIN, MAX, Data Hold and Auto power off
  • Complete with 6 x AA batteries, SD card, telescoping probe with cable, and hard carrying case
Tag: #SDL350 

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Specifications Range Resolution Basic Accuracy
Air Velocity
m/s 0.2 to 25m/s 0.01m/s ±5%rdg
ft/min 40 to 3940ft/min 1ft/min ±5%rdg
MPH 0.5 to 45MPH 0.01MPH ±5%rdg
knots 1 to 31knots 0.01knots ±5%rdg
km/h 0.7 to 72km/h 0.01km/h ±5%rdg
CFM (feet 3 /min) 0 to 1,907,000 CFM 0.001 to 100 CFM
CMM (meter 3 /min) 0 to 54,000 CMM 0.001 to 1 CMM
Temperature 32 to 122°F (0 to 50°C) 0.1° ±1.5ºF (±0.8ºC)
Type K Temperature -148 to 2372°F (-100 to 1300°C) 0.1° ±(0.4% + 1.8°F/1°C)
Type J Temperature -148 to 2192°F (-100 to 1200°C) 0.1° ±(0.4% + 1.8°F/1°C)
Memory 20 Million data records using 2G SD card
Dimensions 7.2 x 2.9 x 1.9'' (182 x 73 x 47.5mm)
Weight 23.1oz (655g)


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Extech SDL350 Hot Wire CFM Thermo-Anemometer/Datalogger


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